问题描述

我正在使用 Gedmo Doctrine 扩展
到目前为止，一切都运行良好，除了翻译缓存.

I'm using Gedmo Doctrine extensions
All works well so far, except for translations caching.

$entity = $repository
            ->findByIdFullData($id)
            ->setHint(DoctrineORMQuery::HINT_CUSTOM_OUTPUT_WALKER, 'Gedmo\Translatable\Query\TreeWalker\TranslationWalker')
            ->useResultCache(true, $cache_time, $cache_name)
            ->getOneOrNullResult();

findByIdFullData() 返回 DoctrineORMQuery
但是翻译不会被缓存.在探查器中，我看到这样的查询:

findByIdFullData() returns DoctrineORMQuery
But the translations aren't cached. In profiler I see queries like that:

SELECT 
  e0_.content AS content0, 
  e0_.field AS field1 
FROM 
  ext_translations e0_ 
WHERE 
  e0_.foreign_key = ? 
  AND e0_.locale = ? 
  AND e0_.object_class = ?

Profiler 中的所有查询都是从 ext_translations 获取结果.如何使用翻译后的字符串缓存结果?

And all the queries in profiler are to get results from ext_translations. How can I cache the result already with the translated strings?

尝试使用 Array Hydration 和 memCache，但结果更加混乱，因为我的结果项上传了无法序列化的媒体文件或其他内容.无论如何，我最终会重写大部分代码.

Tried using Array Hydration and memCache, but ended messing up more, because my result item has uploaded media file which can't be serialized or something. Anyway I would end up rewriting most of the code.

感谢任何帮助.

编辑:

我尝试了 Karol Wojciechowski 的回答，它解决了部分问题.当我使用 getOneOrNullResult() 而不是 getResult() 时，它会缓存.这是一些代码.

I've tried Karol Wojciechowski's answer and it solved part of the problem. It caches when I use getOneOrNullResult() but not with getResult(). Here's some code.

在服务中:

$query = $this->em
    ->getRepository('MainBundle:Channels')
    ->findActiveChannelsByGroupId($id);
$this->container->get('my.translations')->addTranslationWalkerToQuery($query, $this->request);

$channels = $query
    ->useResultCache(true, 900, '1__channels__active_by_group_1')
    ->getResult();

频道存储库:

public function findActiveChannelsByGroupId($group_id, $limit = null)
{
    $rs = $this
        ->createQueryBuilder('c')
        ->select('c', 'm')
        ->leftJoin('c.media', 'm')
        ->leftJoin('c.group', 'g')
        ->where('c.active = 1')
        ->andWhere('g.id = :group_id')
        ->orderBy('c.sortOrder', 'asc')
        ->setParameter('group_id', $group_id)
        ->setMaxResults($limit);

    return $rs->getQuery();
}

如果我更改为 findActiveChannelsByGroupId($id, 1)(注意限制参数)，它仍然不会缓存，但是如果我更改为 getOneOrNullResult(), 查询被缓存

If I change to findActiveChannelsByGroupId($id, 1) (notice limit param), it still doesn't cache, but then if I change to getOneOrNullResult(), query gets cached

推荐答案

我们的工作代码:

    public function addTranslationWalkerToQuery($query, $request)
{
    $config = $this->container->get('doctrine')->getManager()->getConfiguration();
    if ($config->getCustomHydrationMode(TranslationWalker::HYDRATE_OBJECT_TRANSLATION) === null) {
        $config->addCustomHydrationMode(
            TranslationWalker::HYDRATE_OBJECT_TRANSLATION,
            'Gedmo\Translatable\Hydrator\ORM\ObjectHydrator'
        );
    }

    $query->setHint(
        DoctrineORMQuery::HINT_CUSTOM_OUTPUT_WALKER,
        'Gedmo\Translatable\Query\TreeWalker\TranslationWalker'
    );
    $query->setHint(
        GedmoTranslatableTranslatableListener::HINT_TRANSLATABLE_LOCALE,
        $request->getLocale() // take locale from session or request etc.
    );
    $query->setHydrationMode(TranslationWalker::HYDRATE_OBJECT_TRANSLATION);
    $query->setHint(Query::HINT_REFRESH, true);
}

如果你想getResult"

And if you want to "getResult"

执行 getResult 会更改水合模式.查看 AbstractQuery 类方法:

Performing getResult changes hydration mode. Have look on AbstractQuery class method:

/**
     * Gets the list of results for the query.
     *
     * Alias for execute(null, $hydrationMode = HYDRATE_OBJECT).
     *
     * @param int $hydrationMode
     *
     * @return array
     */
    public function getResult($hydrationMode = self::HYDRATE_OBJECT)
    {
        return $this->execute(null, $hydrationMode);
    }

它与 getOneOrNullResult 一起使用，因为它没有改变水合模式

It works with getOneOrNullResult because it didn't changes hydration mode

public function getOneOrNullResult($hydrationMode = null)

如果您想缓存可翻译的查询，您应该在执行 getResult 方法期间将 hydration 模式更改为 TranslationWalker::HYDRATE_OBJECT_TRANSLATION.

If you want to cache translatable queries you should change hydration mode during execution getResult method to TranslationWalker::HYDRATE_OBJECT_TRANSLATION.

我个人会将此方法包装到服务中，该服务将处理与翻译相关的所有事情.

Personally I'll wrap this method into service which will handle everything associated with translations.

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